Customer Balance and Total Amount MST vary in Customer balance form

Dear all,

Been struggling with this issue on Dynamics Ax 2009. Customer balance is different from total MST balance. What can be responsible for this please. I even have this variance in customer accounts that transact in only default currency.

Sales Ledger Module/Customer details/Balance Button

thanks in anticipation

That may be different if you have any open payments from the customer.

Could you post a screen shot to understand it more clearly.

Thanks Santosh and see screen as requested

In this case there are no open payments. The currency of transaction is only NGN which is default currency
Cust balance.png